Ni-MH battery pack.Principle of polymer lithium-ion battery

　　The principle of polymer lithium-ion batteries is the same as liquid lithium, the main difference is that the electrolyte is different from liquid lithium. The main structure of the battery includes three elements: positive electrode, negative electrode and electrolyte. The so-called polymer lithium-ion battery means that at least one or more of these three main structures use polymer materials as the main battery system. In the currently developed polymer lithium-ion battery system, polymer materials are mainly applied to the positive electrode and electrolyte. Anode materials include conductive polymers or inorganic compounds commonly used in lithium-ion batteries. Electrolytes can use solid or colloidal polymer electrolytes, or organic electrolytes. Common lithium-ion technology uses liquid or colloidal electrolytes, so a strong secondary packaging is required to accommodate the combustible active ingredients, which adds weight. It also limits the flexibility of the size. There is no excess electrolyte in the polymer lithium-ion process, so it is more stable and less prone to dangerous situations caused by overcharging, collision or other damage to the battery, and excessive use.

　　The new generation of polymer lithium-ion batteries can be thin in shape (ATL batteries can be as thin as 0.5 mm, which is the thickness of a card), arbitrary area and arbitrary shape, which greatly improves the flexibility of battery design, so that it can match the product needs to make any shape and capacity of the battery. It provides application device developers with a high degree of design flexibility and adaptability in power solutions to maximize their product performance. At the same time, the unit energy of the polymer lithium-ion battery is 50% higher than that of the current general lithium-ion battery, and its capacity, charge and discharge characteristics, safety, operating temperature range, cycle life (more than 500 times) and environmental performance have been greatly improved compared with lithium-ion batteries.

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